Coin-controlled liquid dispenser



April so, 1929. M. w', FELVER ET AL 1,71o;924

H COIN CONTROLLED LIQUID DISPENSER Filed April 27, 1927 f1 sheets-sheet 2 im l BYQ'MM@ ATTonNEv April 30, 1929. MQ w. FEU/ER ET AL 1,710,924

COIN lCONIROLLEI') LIQUID DISPENSER Filed April 27, 1927 4 sheets-sheet 5 Fig'l I BY @Mgg April 30, :.1929 M. w. lv-EL'VR ET Ar. 1,710,924

G01N CONTROLLED LIQUID DISPENSERI Filed April 27, 1927 4 Sheets-Sheet 4 INVENToRs ATTORNEY APatented pr. 30, 1929?.

MINOR W. FELVER AND RAYMOND A. JOHNSON, F DELANOyCALIFORNIA.

CoI'N-ooNTRoLLnn Lieuin nisrniisnn,

' Application filed April 27,7192?. Serial No. 186,882.

This invention relates to coin control liq-A uid dispensing devices and particularly repre* sents improvements over andinodiiications of the type of apparatusV shown in our oo-pendring application for patent,Serial N 0.154,682,

filed December 14th, 17926. Y In the previous device' the liquid was dispensed from 'the'.

pump cylinder by hand7 the hand control means being able to function only after a coin had been deposited in its corresponding slot valve in the air line to the cylinder will be automaticallyopened; and when the pump plunger has moved to dispense an Vamount of liquid equal in value to that of the coin deposited, lsaid valve will be automatically closed. `VAt thepsame time another valve to admit airto the opposite end of the cylinder will Ybe automaticallyYopened. When the pump plunger has returned to its normal lowered position the last named air valve will be again automatically closed, while the other valvewill still remain closed and in a position readyto be vagain opened upon a furthermovement of the coin controlled lever.

.tions exceptk theV de ositinor of the'necessar coin and a slight movement of a .single easily manipulated 4control lever..

.These objectsv we accomplish by parts as will fully appear by a perusalrofthe following speciiication and` claims. l. Y

ln the drawings similar characters of refereiice indicate corresponding.parts in the several views: Y

Fig. l is a sectional elevation ing movement.

This apparatus therefore is much Amore convenientand simpler for a customer to. operate since it eliminates all handoperav means ofA yauch structure 'and relative` arrangement lof Fig. 2 is an enlarged end'view of the air valves and their control means vthe parts* being in the same position as in Fig. l.

Fig. 3 is a topv plan view of the. parts of the structure shown in Fig. 2. `v

Fig.v 4 is an enlarged end viewof the air valves and their control means with the parts.

in the positions occupied just after the depression of the'coin controlled lever. Y

Fig. 5 is a similar view with the parts in the positions occupied when 'the pump plunger rod has been raisedl to its limit of movement as determined Vby the selective stop and has caused the dispensing control Vvalve to beA closed andthe other or' returnv movement valve to be opened. .l

Fig. 6 is a fragmentary plan ofthe coin controlled lever and the plunger-rod stop mechanism associated therewith, taken sub stantially on the line 6 6 of Fig. l, Y

Fig. 7 is a ragmentaryoutside elevatio of the upper end of the. casing containing the coin controlled mechanism.

j vReferring now more ,particularly to they characters of reference on the'drawings, the numeral l denotes the barrel or cylinder of an. ordinaryvertical gasoline pump,r from vvhicli the plunger rod 2 projects upwardly. Attached to the upper end of this rod isa piston 8 working in a vertical air cylinder t, said piston having a stroke the saine length as that of the pump plunger.

Extending' between the pump and the air 1 cylinder and parallel to the rod 2 is a turn-V able shaft 5 from which, at vertically spaced intervals, fixed stops 6 project radially in circumferentially spaced relation to eachother. One at a time Jof these stops is adapted to project into the path of movement of aiiXed stop 7 rprojecting from the plunger rody 2. rfhe shaft 5 also has another stop 8 below thev stops 6 and arranged to be engaged bythe rod stop 7, wiich is disposed .between said Vstops t) and 8.

Mounted in lined relation to the pump and Y its associated parts are horizontally disposed air valves comprising cylindrical casings 9 and 10, with rotors ll and l2 turnable therein. The valves are disposed on opposite sides v of the shaft 5 `above the stop 8. Air intake of our im proved apparatus showing the parts in their normal positions or with the pump plunger. Vrod fully retracted and readyfor a dispensiressed air such as is at resent available' in all service or filling stationsof any size.

Anair pipe 14 leads from the casing 9 in ciriio v outer ends to links 22 and 22a.

cumferentially spaced relation to the intake opening to the bottom of the air cylinder 4; while a pipe 15 leads from the casing 10 in. circumterentially spaced relation to the air intakeV thereof to the top of the cylinder. The rotor 11 has a passage 16 to establish ycommunication between the opening 13 and the passage 14; while the rotor 12 has a similar passage 17 to establish communication be tween the corresponding intake 13 and the pipe 15. The rotors also have additional passages 18 and 19, respectively, offset from v the passages 16 and 17, to establish communii able in guides 24 mounted lin fixed connection with vthe valve supporting members 25'. rl`lie .lower ends of the barshave lugs or feet 2 6 and 26, respectively, projecting therefrom,

` the foot 26 projectinginto the path ot movenient o'lI the stop8 and the foot 2G projecting into the path of inoven'ientof the stop i" as rwellas the stop 8. The valve rotors are so arranged that when therbar 23 is raised the exhaust of tlievalve 9 is openand the air flow to the cylinder 4 shut oit while when the bar`23n is down the exhaust of the valve 10' isvopen and the air flow to the cylinder 4 `shut oil. When the position ot the bars is reversed the posit-ions of the valve rotors is reversed also. In other words the opening movement oi these valves takes place with opposite movements ot the bars. rlhe normal position ot' the bar 23 isup so that the valve 9 is closed and the normal position et the bar 23`ais down so that the valve 1 0 is also closedf By normal position is meant the position occupied after the cycle of dispensingoperationsl ias been completed. and the parts ofthe structureare ready for further dispensing' operations. rIt will therefore be seen that the bar23 is lowered from` said normal position the valve') will be opened, as shownin Fig. 4, and theairvwill flow to the bottom of the air cylinder to act on the piston therein and raise the same. The plunger rod ofthe pump will also he raised and tlie liquid dispensed fromithe pump.` W hen the stop T con the vplunger rod reaches whichever one oi the stops 6 has been moved by'rotation ot the shaft 5 to be in the path of'said stop 7 said shaft will, be raised. The stop 8 will. be raised also and bearing against the feet 23 and 261 of 'both valve-connected bars will raise both said bars. This results in the valve rotors being turned; the valve 9 to an air feed closing` position and an exhaust opening position; and .the valve 10 to an airfeed opening position and exhaust closing position as shown in Fig. 5.

vln order to insure the continued turning et each rotor to its exhaust opening position even aitcr the air to the cylinder has been shut oli (or vice versa), and the movement oi? the plunger rod has been consequently halted, the links have slotted connectionwith.

the arms 21 and 21, and snap action springs 27 are applied to said arms to throw them in vone direction or thevother to complete the movement oftl the rotors to the necessary eX- tent, whether the bars are being moved up or down. v

T he valves having been inoved to the above described positions air enters the top ot' the cylinder while it eniausts from the lowerend-1 and the pump plunger rod is forced'down tol its loweriiiost position, pump cylinder refilling with liquir during such movement, as custoii'iary. lV i th the Vapproach of the plunger rod to such position, the stop 7 will engage the Afoot and press the same down to eii'ect the closing` of the valve 10. At the same tin'i to be lo we the toot 2Ga is s The valve 9 will still remain closed however since the :toot 26 controlling said valve is not engaged bythe stop 7. The bars and the valves controlled thereby are thus returned to the original positions shown in 2 and the pump will reiiiain idle until the val-ve 9 is again V,moved toits open position by the nc-reessary rotation et its rotor. i V

e such movement causes the stop 8 Rotation of the rotor for the above purpose,Y i and the rotation of the shaft 5 to selectively place any stop 6 into the path of movement oil",r

,i to its" original position also, sinceVr engaged with said stop the plungerrod stopi' is performed by the following structure:

Mounted in connection with one side of the same is a vertical and preferably cylindrical casing 28, disposed so that thel shaft y3 is between@ the' plunger rodr and the casing.` lurnable'in thejcasing is aver'- tical shaft 29 Jfrom the upper" end ofwhich a I lever 30 projects a certaindistan'ce outwardly oill the casing. The lever ispivotally connected to the shaft so asto have vvertical Y`swinging n'iovementrelativethereto, while causing the sha-ft to be rotatedv when the lever is turned horizontally. rThe lever passes the pump to through a circumferential slot 31'in the casing, vertical and spaced slots 32 being disposed below and communicating with tl e slotV 31 to receive the lever 30 therein when said lever is depressed; vBelow the slots 32 coin openings 33 of different sizes, toreceive ditferent coins, are c ut through the ,iront of the casing. (See Fig. 7.) kThree coin'openin'gs are preferably provided to receive 25o, 5Go' `ist the stops 6 relative' tothe plunger rod stop willl be altered accordingly. The stops 6 are set relative tothe slots 32 so that when the leveifis vertically alinedrwithl the dierent slots-the stops in their respective order will be turned to be engaged by the stop' 7. The

stop 6 corresponding to the smallest coin opening is ofcourse the lowest one on the shaft, vthe others being correspondingly disposed and fall being located on the shaft so as to permitan upward and dispensing movement of the pump'plung r corresponding to the value of the coin deposited in theV machine.

fr coin actuated mechanism arranged in connection witheach coin opening and of any suitable nature or such as is shown in our copending application for patent above nientioned prevents the lever from being fully y depressed in any slot 32funtil a coin of the proper value has been inserted in 'the corresponding opening 33.v The depression of the lever causes the valve 9 to be opened and held open untiltlie'pumpvplunger has completed the portion of its stroke corresponding to the value of-the'coin deposited by the following structure:A I"

The lever when alined with any of the slots 32 isfadapted to bear down on a horizontaly arm member 37y pivoted in the casing 281mder said lever. kAttached to the arm is a vertical bar 38 which at its lower end ispivoted in connection with another horizontal arm 39 pivoted at one end inthe casing. he free end of the arm v3.9 carries an upwardly projecting pin 14() which is Vslidable through a lifted guide41. This pin isadapted to engage al recess or notch 42 cut in a transverse shaft 43 fixed in the casing. 'A .spring 44 actsto normally holdthe pin in such engagement. The stem 145 of the valve-rotor il projects into' the casing and carries on itsinner' end a radial arm 46 which oasses under the arm 39 at right'angles tothe longitudinal plane t-heretatetliestem 45 and turn tlievalvc rotor to- Yward an open or air feeding position. Vis soon as the rotor yhas been turnedV past the dead-center position of thesnap action spring Y 27' of the val-ve, the spring functions to coin- `plete the movement of the rotor and the arm 46v will be lowered clear of the arm 39. The pump will be then viously described. Y

Slid'able on the shaft 43k is a sleeve 47 normally pressed against the pin 40 by a spring 48. As soon as the pin is released from the notch 42 by depression of the leverv 30, the .spring 48 functionsto move the sleeve along soias tocover the notch and thus prevent re- .turn ofthe pin into place. rlfhe member 37 is then held from risingand the lever 30 is' likewise held depressed in vits slot 32, since 'i ml er 37 is provided i 1i a loi .cal association therewith.

sleeve 47 is thus released, av lug in elo i ver with as 5() depending therefrom bears against stops other arm of which engages a grooved collar on the shaft 5. Therefore when lthe shaft raised by engagement of the plunger rod stop 7 with vthe stop 6 of said shaft, said` collar will be -raised and the bellcrank will be turned so to force the stops 5l against the lug 50,"moving the sleeve 47 against the pressure of the spring 48 and causingv said sleeve to clear the knotch 42. The pin 40. will then reenter said notch owing tothe pull of Vthe spring v44 thereon and the arm 39 and the parts connected thereto will return to their normal raised positions.

'vllhougli we have shown an airvalve controlling the admission of air tothe upper end of the cylinder, as well as to .the lower end thereof,- such upper end air valve may be omitted if it is desired to use gravity for the return movement ofthe pump'plunger:

A yieldable spring-pressed catch structure C is associated with the shaft 5, in order to maintain it set in position when shifted by thevmovement'of the plunger-rod.` f

'fr' rom the foregoing description it will be put into operation as prereadily seen that we haveV produced such a device as substantially fulfills the objects of the invention as set forth herein.

Vhile this specification sets forth vin detail the present and preferred.construction of the device, still in practice such deviations .from such detail may be resorted to do not form a departure from the spirit of the invention, as deined'by the appended claims.

Having thus described our invention what cure by Letters Patent is: v

ing'a dispensing pump-cylinder, a plungeroperating rod' projecting therefrom, an air cylinder,a piston movable in the air cylinder and connected to the rod, air passage means to the air cylinder to enable air to be fed against the piston to move said piston and the rod in a dispensing direction, an air valve ywe claim as new and useful and desire to se- Y l. A' liquiddispensing apparatus includ-pv in said passage means, hand controlled means for vopening-the valve, and automatic-ally functioning means for causing the valve to be closed after the rod has moved a predetermineddistance in said dispensing direcj tion.

.means for opening 2., A liquid -dispensing apparatus including a dispensing pump-cylinder, a plunger-` operating .rod projecting therefrom, an air cylinder, a .piston movable in the air cylinder and-'connected tothe rod, air passage means to. the air cylinder ,to enable air to be fed against the piston to move said piston and the rod in a dispensing direction, an air Valve in said passage means, hand controlled 'means for opening the valve, and means actuated by the movement of the rod a predetermined distance for then automatically closing the valve.

3. Aliquid dispensing apparatus including a dispensing pump-cylinder, a plunger-V operating rod projecting therefrom, an air cylinder, a piston movable in the air cylinder and connected to the rod, air passage means to V`the air cylinder to enable air to be fed against -movement of the leveryin the other direction for determining the extent to which the rod l may thus move.

y4. A liquiddispensing apparatus including a dispensing pump-cylinder, a plungeroperating rod vprojecting therefrom, an air` cylin der, a piston movable in the air cylinder and connected to Vthe rod, separateair pasleading to the opposite ends of the air cylinder, valves in said passages, both said .valves being normally closed, hand operated one valve, and means actuated by the vmovement of the plungerl rod a predetermined distance foi1 closing said one valve and opening the other valve.

5. A liquid dispensing apparatus including a dispensing pump-cylinder, a plungeroperating rod projecting therefrom, an rair cylinder, a. piston movable in the air cylinder and connected to the rod, separate air passages leading to the opposite ends of the air cylinder, valves in said passages, both said valves being normally closed, hand operated means for opening one valve, means actauted by the movementof the plunger iod a predetermined distance for closing said one valve and opening the other valve, whereby to reverse the direction of How-of air to the cylinder and 'cause the rod to be movedfin the oppositeV direction, and means governed by the movement of the rod to the end of its stroke,

.passages and between the deliverypassage in said opposite direction for then closing said other valve Without again opening said cylinder, a piston movable in the air cylinder Y and connected to the rod, an air valve com-l prising a body and a valve rotor therein, an air intake passage to the body, an air delivery passage from the bodyl leading to the cylinder, an exhaust opening in the body, and a valve element in the body'to establishcominunication between the, intake and delivery and the exhaustopening respectively and Val-` ternately, a vertical vbar connected to and depending from the valve, a laterally projecting footon the bar, a vertically movable shaft disposed parallel to the plunger rod, astop on the shaft under the foot, saidfoot when the fSOJ valve is closed being raisedfrom the stop Y when the shaft is in its normal position, hand meansfor moving. the valveto an open position and for causing the foot to then lie inimediately adjacent and over the stop, land means governed by the outward movement of the plunger rod a predetermined distance for raising the shaft and causing the stop to raise the toot and move the valve to a closedV posi-A tion. i Y Y 7. A liquid dispensingV apparatus including a dispensing-pump-cylinder, ajplungeroperating rod projecting therefrom, an air cylindera piston movable in the aircylindei' and connected to the rod, an air valve com-V prising a body, anair intake passage to the' body, an air delivery passage from the bodv leading to the cylinder, an exhaustopening. in the body, and a movable element fin the body to establish communication between the'v intake and delivery passages and between the delivery passage and theexhaust opening respectively and alternately, a vertical bar con-r nected to and depending from the valve, a lati erally projecting foot on the bar, a vertically movable shaft disposed parallel to the plunger rod, a stop on the shaft under the foot, said foot When the valve is closed being raised lfrom the stop when the shaft is in its normal position, hand means for moving the valve to an open position and for causing-the footto then lie immediately adjacent and over the stop, a stop projecting .from the plunger rod, and a stop' projecting from the shaft, said ifeo rod stop being disposed between said shaft stops and the latterbeing both in the path of movement of the rod stop. i e i 8. A liquid dispensing apparatus including a dispensing pump-cylinder, a plunger-operating rod projecting therefrom, an air cylinfV der, apiston movable in the air cylinder and connectedA to the rod, separate air passages leadingtothe opposite ends of the air cylinf der, valvesin said passages, said ,valvesl infeet to engage both the same, hand means applied to said one valve to open the same and lower the corresponding foot to a level with the other foot, another stop on the shaft above the feet, and a stop en the plune'er rod between the feet and said other 'shalt stop and arranged to engage the same and raise the shaft after the red has been raised apreden termined distance with the opening of said one valve; the shaft stop being positioned, upon the retractive movement of the plunger rod, to engage and lowerthe foot oie-the bar connected to said other valve but not the foot of the bar connected to the hand-,opened valve.

9. A liquid dispensing apparatus including a dispensing pun'ip-cylinder, a plungeroperating rod projecting therefrom, an air cylinder, a piston movable in the cylinder and connected to the rod, separate air pas-- sages leading to the opposite ends of the air cylinder, valves in said passages, said valves the elements, feet Vprojecting laterally from the bars, the bar and foot of one valve being raised relative to the other valve when both valves are closed, and heing arranged to open byinovements in opposite directions, hand means applied to said one valve to open the same and lower the corresponding foot t0 a level with the other foot, and means actuated by the outward movement of the plunger rodv after said one valve has been opened and the rod has meved a predetermined distance for raising both feet to close'the one valve and open the rtlier, whereby movement will be imparted to the plunger rod in the opposite direction, lfor then lowering the foot connected to said other valve to lower and again close the saine by the time the plunger rod has moved to a fully retracted position,-without imparting any movement to the foot connected to said one valve to alter the already closed position of vthe same.

i i0. A structure as in claim l with snap action'means incorporated with said last named means to cause the valves to be suddenly moved with rapidity in excess of that of the movement ofthe plunger after said plunger actuated means has functioned to a predetermined extent.

In testimony whereof we ax our signa- MNOR W. FELVER. RAYMOND A. JOHNSON.

' tures. including movable elements both normally. closed, bars depending from and connected to 

